1 files changed, 39 insertions, 2 deletions

diff --git a/modules/gridmap/grid_map.cpp b/modules/gridmap/grid_map.cpp
index 3383daefea..67deedf839 100644
--- a/modules/gridmap/grid_map.cpp
+++ b/modules/gridmap/grid_map.cpp
@@ -34,6 +34,8 @@
 #include "core/object/message_queue.h"
 #include "scene/3d/light_3d.h"
 #include "scene/resources/mesh_library.h"
+#include "scene/resources/physics_material.h"
+#include "scene/resources/primitive_meshes.h"
 #include "scene/resources/surface_tool.h"
 #include "scene/scene_string_names.h"
 #include "servers/navigation_server_3d.h"
@@ -181,12 +183,39 @@ void GridMap::set_collision_mask_value(int p_layer_number, bool p_value) {
 	set_collision_mask(mask);
 }
 
+void GridMap::set_physics_material(Ref<PhysicsMaterial> p_material) {
+	physics_material = p_material;
+	_recreate_octant_data();
+}
+
+Ref<PhysicsMaterial> GridMap::get_physics_material() const {
+	return physics_material;
+}
+
 bool GridMap::get_collision_mask_value(int p_layer_number) const {
 	ERR_FAIL_COND_V_MSG(p_layer_number < 1, false, "Collision layer number must be between 1 and 32 inclusive.");
 	ERR_FAIL_COND_V_MSG(p_layer_number > 32, false, "Collision layer number must be between 1 and 32 inclusive.");
 	return get_collision_mask() & (1 << (p_layer_number - 1));
 }
 
+Array GridMap::get_collision_shapes() const {
+	Array shapes;
+	for (const KeyValue<OctantKey, Octant *> &E : octant_map) {
+		Octant *g = E.value;
+		RID body = g->static_body;
+		Transform3D body_xform = PhysicsServer3D::get_singleton()->body_get_state(body, PhysicsServer3D::BODY_STATE_TRANSFORM);
+		int nshapes = PhysicsServer3D::get_singleton()->body_get_shape_count(body);
+		for (int i = 0; i < nshapes; i++) {
+			RID shape = PhysicsServer3D::get_singleton()->body_get_shape(body, i);
+			Transform3D xform = PhysicsServer3D::get_singleton()->body_get_shape_transform(body, i);
+			shapes.push_back(body_xform * xform);
+			shapes.push_back(shape);
+		}
+	}
+
+	return shapes;
+}
+
 void GridMap::set_bake_navigation(bool p_bake_navigation) {
 	bake_navigation = p_bake_navigation;
 	_recreate_octant_data();
@@ -316,6 +345,10 @@ void GridMap::set_cell_item(const Vector3i &p_position, int p_item, int p_rot) {
 		PhysicsServer3D::get_singleton()->body_attach_object_instance_id(g->static_body, get_instance_id());
 		PhysicsServer3D::get_singleton()->body_set_collision_layer(g->static_body, collision_layer);
 		PhysicsServer3D::get_singleton()->body_set_collision_mask(g->static_body, collision_mask);
+		if (physics_material.is_valid()) {
+			PhysicsServer3D::get_singleton()->body_set_param(g->static_body, PhysicsServer3D::BODY_PARAM_FRICTION, physics_material->get_friction());
+			PhysicsServer3D::get_singleton()->body_set_param(g->static_body, PhysicsServer3D::BODY_PARAM_BOUNCE, physics_material->get_bounce());
+		}
 		SceneTree *st = SceneTree::get_singleton();
 
 		if (st && st->is_debugging_collisions_hint()) {
@@ -801,6 +834,9 @@ void GridMap::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_collision_layer_value", "layer_number", "value"), &GridMap::set_collision_layer_value);
 	ClassDB::bind_method(D_METHOD("get_collision_layer_value", "layer_number"), &GridMap::get_collision_layer_value);
 
+	ClassDB::bind_method(D_METHOD("set_physics_material", "material"), &GridMap::set_physics_material);
+	ClassDB::bind_method(D_METHOD("get_physics_material"), &GridMap::get_physics_material);
+
 	ClassDB::bind_method(D_METHOD("set_bake_navigation", "bake_navigation"), &GridMap::set_bake_navigation);
 	ClassDB::bind_method(D_METHOD("is_baking_navigation"), &GridMap::is_baking_navigation);
 
@@ -850,6 +886,7 @@ void GridMap::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("make_baked_meshes", "gen_lightmap_uv", "lightmap_uv_texel_size"), &GridMap::make_baked_meshes, DEFVAL(false), DEFVAL(0.1));
 
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "mesh_library", PROPERTY_HINT_RESOURCE_TYPE, "MeshLibrary"), "set_mesh_library", "get_mesh_library");
+	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "physics_material", PROPERTY_HINT_RESOURCE_TYPE, "PhysicsMaterial"), "set_physics_material", "get_physics_material");
 	ADD_GROUP("Cell", "cell_");
 	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "cell_size"), "set_cell_size", "get_cell_size");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "cell_octant_size", PROPERTY_HINT_RANGE, "1,1024,1"), "set_octant_size", "get_octant_size");
@@ -912,7 +949,7 @@ Array GridMap::get_used_cells() const {
 	return a;
 }
 
-Array GridMap::get_meshes() {
+Array GridMap::get_meshes() const {
 	if (mesh_library.is_null()) {
 		return Array();
 	}
@@ -920,7 +957,7 @@ Array GridMap::get_meshes() {
 	Vector3 ofs = _get_offset();
 	Array meshes;
 
-	for (KeyValue<IndexKey, Cell> &E : cell_map) {
+	for (const KeyValue<IndexKey, Cell> &E : cell_map) {
 		int id = E.value.item;
 		if (!mesh_library->has_item(id)) {
 			continue;